RHEL 8 / CentOS 8 comes by default, as it has been for many years already with a GNOME desktop environment. From this reason, in a broader sense when we talk about GNOME desktop installation we normally talk about RHEL 8 / CentOS 8 workstation.

In this tutorial we will be installing GNOME desktop as part of the workstation package group.

In this Install gnome on Redhat 8 tutorial you will learn:
  • How to install Gnome Desktop on RHEL 8 / CentOS 8.
  • How to change runlevel to boot to graphical interface in RHEL 8 / CentOS 8.

The Nvidia CUDA toolkit is an extension of GPU parallel computing platform and programming model. The Nvidia CUDA installation consists of inclusion of the official Nvidia CUDA repository followed by the installation of relevant meta package.

A hostname is the label or name linked to a device on a network. Its main purpose is to recognize a device on a specific network or over the internet. There are three different hostname types:
  • Static - Most of the time you will be interested in this type of hostname which is defined by user and the /etc/hostname configuration file.
  • Transient - This type of hostname is defined within kernel space and by default it is set to be the same as the static hostname. Transient hostnames can be set/updated by DHCP or mDNS at runtime.
  • Pretty - Pretty hostname allows for additional characters as per UTF8 character set hence serving rather only for presentation purposes. The pretty hostname also allows to include spaces.
This article will explain how to change or set hostname on RHEL 8 / CentOS 8 Linux server or workstation. To change hostname you will use the hostnamectl command.

In this tutorial you will learn:
  • How to change the static hostname.
  • How to change the transient hostname.
  • How to change the pretty hostname.
  • How to check the current hostname.

The CentOS 7's support for Nvidia video graphic cards comes in a form of an open source nouveau driver. In case the nouveau driver is not a sufficient solution, users can install the official Nvidia driver as a proprietary alternative. This step by steps tutorial will guide you through the entire process on Nvidia driver installation.

Objective

Our objective is to ensure that updating the operating system will run smoothly and without errors.

Operating System and Software Versions

  • Operating system: Red Hat Enterprise Linux 6+

Requirements

Privileged access to the systems

Difficulty

EASY

Conventions

  • # - requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command
  • $ - given linux commands to be executed as a regular non-privileged user

Introduction

Keeping the system up to date is an every day task for a sysadmin, as well as a desktop user. By applying the latest (stable) available software on the system we can take advantage of the latest features, and will be more protected from security issues and hopefully suffer less from bugs. To update the system you will need configured yum repositories that act as the source of the updated software.

If you sit next to the machine that is running the operating system to be updated, you can easily act if something goes wrong during update, like checking the output on the terminal, or boot to a live system if the upgraded one does not return from reboot - but this is not always the case. Think of a datacenter with hundreds or thousands of (virtual) machines, or simply a physical PC that you have to upgrade remotely.

There are simple steps we can perform to prepare the system for upgrade, and possibly clear any problem that would endanger a successful update.

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